. an american hero, considered the most lethal sniper in u.s. history, was killed in a shooting in a texas gun range. welcome to a brand-new hour, here inside america's news headquarters. >> eric: good morning. he survived war zones, but was tragically killed in texas, where the former noted navy seal chris kyle was gunned down while reportedly helping a soldier, suffering from ptsd. kyle was a decorated veteran of the war in iraq. high served four tours and earned a number of medals for distinguished service and wrote a book about his time as a sniper. he is credited with worn 50 kills of insurgents. we go live to the new york city newsroom with the heart-breaking story. >> reporter: that's right. chris kyle, known as the u.s. military's most lethal sniper, and another man were killed at the rough creek lodge, outside of fort worth, texas. the accused shooter's believed to be a troubled, former soldier, now custody, after a dangerous pursuit. the loss has stunned the military community in which he was revered as an example of service and excellence. he wrote the best-selling auto biography, "